Fig. 2
From: A novel two-step, direct-to-PCR method for virus detection off swabs using human coronavirus 229E
Two-step, direct-to-PCR results from serial dilution of viral concentration spiked onto swabs for limit of detection testing. Red lines represent 1.2 × 107 viral copies/mL spiked swabs. Brown lines represent 1.2 × 106 viral copies/mL spiked swabs. Pink lines represent 1.2 × 105 viral copies/mL spiked swabs. Navy lines represent 1.2 × 104 viral copies/mL spiked swabs. Teal lines represent 1.2 × 103 viral copies/mL spiked swabs. Olive lines represent 1.2 × 102 viral copies/mL spiked swabs. Black lines represent 1.2 × 101 viral copies/mL spiked swabs. Green lines represent virus free, negative control swabs